Alteration of the epigenome is associated with a wide range of human diseases and deciphering the pathways that regulate these epigenetic modifications is a major milestone for the understanding of diverse biological mechanisms but also, human pathologies from common to rare diseases.

The involvement of epigenetic variability in the context of rare diseases remains poorly explored but might be significant in many cases, given the absence of correlation between the genetic defects, variability of symptoms and disease penetrance from patient to patient or within families. Our projects, combining molecular and cellular biology, genomics and medical sciences, is focused on understanding the epigenetic mechanisms involved in human pathologies, particularly rare diseases.

In this context, we are particularly interested in the epigenetic variability and regulation of subtelomeric regions in human diseases. We aim at understanding the functional interactions between telomeres, identical from one chromosome to another and chromosome-specific subtelomeric regions and investigated how these regions contribute to pathologies, especially through the exploration of Facio-Scapulo-Humeral Dystrophy (FSHD), a peculiar muscular dystrophy linked to subtelomeric imbalance. To achieve these goals, we have gathered tools and expertise for the diagnosis of this complex disease and more recently focused on the development of hiPSCs-based models for modeling pathologies affecting skeletal muscles and neuromuscular junctions. Our project is thus organized around two main axis, one focused on the exploration of epigenetic alterations in neuromuscular disorders, mainly FSHD and the second, on the development of cellular models and tools for the exploration of patho-mechanisms associated with neuromuscular diseases. In this context, continuously collaborate with hospital services and gathered large collections of biological samples that can be exploited experimentally, in particular through the production of induced pluripotent cells (hiPSCs) and the development of new methods for the targeted differentiation of these cells and disease modeling.

Chateau, A.  et al. 2016

SIRT1 Deficiency in endothelial progenitor cells drives pro-senescent microparticles release through MKK6 upregulation

J. Thromb. Haemost. - issue: - volume: 14 - pages: 139-139.

Lecocq, C.  et al. 2016

Delayed-onset Friedreich's ataxia revisited

BackgroundFriedreich's ataxia usually occurs before the age of 25. Rare variants have been described, such as late-onset Friedreich's ataxia and very-late-onset Friedreich's ataxia, occurring after 25...
Mov. Disord. - issue: 1 - volume: 31 - pages: 62-69.

Robin, JD.  et al. 2015

SORBS2 transcription is activated by telomere position effect-over long distance upon telomere shortening in muscle cells from patients with facioscapulohumeral dystrophy

DNA is organized into complex three-dimensional chromatin structures, but how this spatial organization regulates gene expression remains a central question. These DNA/chromatin looping structures can...
Genome Res. - issue: 12 - volume: 25 - pages: 1781-1790.

Pilliod, J.  et al. 2015

New Practical Definitions for the Diagnosis of Autosomal Recessive Spastic Ataxia of Charlevoix-Saguenay

Objective: Autosomal recessive spastic ataxia of Charlevoix-Saguenay (ARSACS) is caused by mutations in the SACS gene. SACS encodes sacsin, a protein whose function remains unknown, despite the...
Ann. Neurol. - issue: 6 - volume: 78 - pages: 871-886.

Boushaki, S.  et al. 2015

Prevalence of BTK mutations in male Algerian patterns with agammaglobulinemia and severe B cell lymphopenia

X linked agammaglobulinemia (XLA) is the first described primary immunodeficiency and the most common form of agammaglobulinemia. It is characterized by susceptibility to recurrent infections,...
Clin. Immunol. - issue: 2 - volume: 161 - pages: 286-290.

Mariot, V.  et al. 2015

Correlation between low FAT1 expression and early affected muscle in FSHD

Neuromusc. Disord. - issue: - volume: 25 - pages: S312-S312.

Nguyen, K.  et al. 2015

Incidental findings on array comparative genomic hybridization: detection of carrier females of dystrophinopathy without any family history

Array comparative genomic hybridization (aCGH) has progressively replaced conventional karyotype in the diagnostic strategy of intellectual disability (ID) and congenital malformations. This technique...
Clin. Genet. - issue: 5 - volume: 87 - pages: 488-491.

Portilho, DM.  et al. 2015

miRNA Expression in Control and FSHD Fetal Human Muscle Biopsies

Background Facioscapulohumeral muscular dystrophy (FSHD) is an autosomal-dominant disorder and is one of the most common forms of muscular dystrophy. We have recently shown that some hallmarks of FSHD...
PLoS One - issue: 2 - volume: 10 - pages: e0116853.

Badja, C.  et al. 2014

Efficient and Cost-Effective Generation of Mature Neurons From Human Induced Pluripotent Stem Cells

For years, our ability to study pathological changes in neurological diseases has been hampered by the lack of relevant models until the recent groundbreaking work from Yamanaka's group showing that...
Stem Cells Transl. Med. - issue: 12 - volume: 3 - pages: 1467-1472.

Robin, JD.  et al. 2014

Telomere position effect: regulation of gene expression with progressive telomere shortening over long distances

While global chromatin conformation studies are emerging, very little is known about the chromatin conformation of human telomeres. Most studies have focused on the role of telomeres as a tumor...
Genes Dev. - issue: 22 - volume: 28 - pages: 2464-2476.

Vassallo, PF.  et al. 2014

Accelerated senescence of cord blood endothelial progenitor cells in premature neonates is driven by SIRT1 decreased expression

Epidemiological and experimental studies indicate that early vascular dysfunction occurs in low-birth-weight subjects, especially preterm (PT) infants. We recently reported impaired angiogenic...
Blood - issue: 13 - volume: 123 - pages: 2116-2126.

Poulain, S.  et al. 2013

Genome wide SNP array identified multiple mechanisms of genetic changes in Waldenstrom macroglobulinemia

SNP array (SNPa) was developed to detect copy number alteration (CNA) and loss of heterozygosity (LOH) without copy number changes, CN-LOH. We aimed to identify novel genomic aberrations using SNPa in...
Am. J. Hematol. - issue: 11 - volume: 88 - pages: 948-954.

Robin, JD.  et al. 2013

Length dependent telomere looping affects long-distant gene expression (5 Mb) in FSHD

Neuromusc. Disord. - issue: 9-10 - volume: 23 - pages: 824-824.

Ferreboeuf, M.  et al. 2013

DUX 4 and DUX4 downstream target genes are expressed in fetal FSHD muscles

Neuromusc. Disord. - issue: 9-10 - volume: 23 - pages: 823-823.

Boussouar, A.  et al. 2013

Acacetin and Chrysin, Two Polyphenolic Compounds, Alleviate Telomeric Position Effect in Human Cells

We took advantage of the ability of human telomeres to silence neighboring genes (telomere position effect or TPE) to design a high-throughput screening assay for drugs altering telomeres. We...
Mol. Ther.-Nucl. Acids - issue: - volume: 2 - pages: e116.

Diala, I.  et al. 2013

Telomere protection and TRF2 expression are enhanced by the canonical Wnt signalling pathway

The DNA-binding protein TRF2 is essential for telomere protection and chromosome stability in mammals. We show here that TRF2 expression is activated by the Wnt/beta-catenin signalling pathway in...
EMBO Rep. - issue: 4 - volume: 14 - pages: 356-363.

Roche, S.  et al. 2013

Comparative analysis of protein expression of three stem cell populations: Models of cytokine delivery system in vivo

Several mechanisms mediate the regenerative and reparative capacity of stem cells, including cytokine secretion; therefore these cells can act as delivery systems of therapeutic molecules. Here we...
Int. J. Pharm. - issue: 1 - volume: 440 - pages: 72-82.

Herbaux, C.  et al. 2012

B-Cell-Specific Transcription Factor BACH2 Involved in the Clinical Behavior Heterogeneity of Waldenstrom Macroglobulinemia

Blood - issue: 21 - volume: 120 - pages: .

Fahiminiya, S.  et al. 2012

Improvement of 2D-PAGE Resolution of Human, Porcine and Canine Follicular Fluid: Comparison of Two Immunodepletion Columns

Contents Follicular fluid provides the microenvironment within which somatic cells proliferate and differentiate, and the oocyte matures. It contains a number of soluble factors implicated in various...
Reprod. Domest. Anim. - issue: 5 - volume: 47 - pages: e67-e70.

Galati, A.  et al. 2012

TRF2 Controls Telomeric Nucleosome Organization in a Cell Cycle Phase-Dependent Manner

Mammalian telomeres stabilize chromosome ends as a result of their assembly into a peculiar form of chromatin comprising a complex of non-histone proteins named shelterin. TRF2, one of the shelterin...
PLoS One - issue: 4 - volume: 7 - pages: e34386.